package gemini.pollux.ui.server.servlet;

import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileItemFactory;
import org.apache.commons.fileupload.FileUploadBase.SizeLimitExceededException;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import org.apache.commons.io.FilenameUtils;

public class UploadImageFileServlet extends HttpServlet {

	private static final long serialVersionUID = 1L;

	@Override
	protected void doGet(HttpServletRequest req, HttpServletResponse resp)
			throws ServletException, IOException {
		super.doGet(req, resp);
	}

	@Override
	public void doPost(HttpServletRequest req, HttpServletResponse res)
			throws ServletException, IOException {
			try {
				FileItemFactory factory = new DiskFileItemFactory();
				ServletFileUpload upload = new ServletFileUpload(factory);

				upload.setSizeMax(1000000);
				res.setContentType("text/plain");
				
				PrintWriter out = res.getWriter();
				try {
					List<FileItem> items = upload.parseRequest(req);
					for (FileItem item : items) {

						if (!item.isFormField()) {

							String fileName = item.getName();
							if (fileName != null) {
								fileName = FilenameUtils.getName(fileName);
							}
							
							File uploadedFile = new File(req.getRealPath("/")+"images//product//", fileName);
							if (uploadedFile.createNewFile()) {
								item.write(uploadedFile);
								//res.setStatus(HttpServletResponse.SC_CREATED);
								out.print("images/product/" + fileName);
								
							} else {
								out.print("The file already exists in repository.");
							}
						}
					}
				} catch (SizeLimitExceededException e) {
					out.println("You exceeded the maximum size ("
							+ e.getPermittedSize() + ") of the file ("
							+ e.getActualSize() + ")");
				}
			} catch (Exception ex) {
				throw new ServletException(ex);
			}
	}

}
